The decision of the Board of Revenue upon such appeal shall be final.

Power to order measurement The Collector may order any assessable land or land already assessed or charged with a rent payable to [the Government], to be measured, for the purpose of determining the amount of assessment to be imposed, or in the case of land already assessed or charged with a rent, for the purpose of ascertaining whether the actual dimensions, and the dimensions upon which the amount of assessment or rent was calculated, correspond.